Interference-proof electrical plug connector

ABSTRACT

An interference-proof electrical plug connector has an insulative housing, two terminal sets, a shielding-grounding plate and a shell. The terminal sets are mounted in the insulative housing and each terminal sets has multiple conductive terminals. Each terminal set has multiple conductive terminals and at least one pair of super-speed signal terminals. Each super-speed signal terminal has a mounting section including a widening tab laterally protruding from the mounting section toward an adjacent super-speed signal terminal to reduce the distance between the super-speed signal terminals of the pair. The shielding-grounding plate is mounted in a rear end of the insulative housing. The widening tabs of each pair of the super-speed signal terminals effectively diminish impedance of the super-speed signal terminal such that input loss and return loss of the super-speed signal terminals are reduced.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a connector, and more particularly toan interference-proof electrical plug connector that widens super-speedsignal terminals to lower signal transmission interference such thatimpedance of terminals are lowered while input loss and return lost arealso decreased. Therefore, stability and efficiency of signaltransmission of the super-speed signal terminals are improved.

2. Description of Related Art

Electrical connectors are general electrical components on electronicdevices widely used for connecting to other matching connectors on theother electrical devices. For example universal serial bus (USB) 3.1connectors are conventional and products that are available and equippedin variety of electronic devices.

USB 3.1 protocol has been further developed to include USB Type Cconnector that is able to provide ultrahigh data transmission speed of10 Gbps and has a light and compact structure especially suitable forportable devices. The USB Type C connector is also featured with areversible socket for reversible connection for extensive applicationson different electrical devices.

The USB type C connector has an insulative housing, two terminal setsand a metal shell. The terminal sets are mounted on the insulativehousing, are able to transmit signals. The metal shell covers theinsulative housing and the terminal sets. Each terminal set has at leasttwo pairs of terminals serving as signal transmitting terminals for highspeed signal transmission. Each terminal has a mounting section, anelectrically contacting section and a soldering section. Each signaltransmitting signal has a mounting section, an electrically contactingsection and a soldering section. The terminals and the signaltransmission terminals are arranged abreast at identical intervals suchthat distances between adjacent two terminals or signal transmissionterminals are the same.

However, the signal transmission terminals of the aforementioned USBType C easily interfered with current or signals on adjacent terminalswhen operating for signal transmission with high frequency signalspassing through the signal transmission terminals. Therefore, highfrequency signals cannot stably pass through the signal transmissionterminals or signal transmission efficiency diminishes.

To overcome the shortcomings, the present invention provides aninterference-proof electrical plug connector to mitigate or obviate theaforementioned problems.

SUMMARY OF THE INVENTION

The main objective of the invention is to provide an interference-proofelectrical plug connector that widens super-speed signal terminals tolower signal transmission interference such that impedance of terminalsare lowered while input loss and return lost are also decreased.Therefore, stability and efficiency of signal transmission of thesuper-speed signal terminals are improved.

An interference-proof electrical plug connector in accordance with thepresent invention comprises an insulative housing, two terminal sets, ashielding-grounding plate and a shell. The terminal sets are mounted inthe insulative housing and each terminal sets has multiple conductiveterminals. Each terminal set has multiple conductive terminals and atleast one pair of super-speed signal terminals. Each super-speed signalterminal has a mounting section including a widening tab laterallyprotruding from the mounting section toward an adjacent super-speedsignal terminal to reduce the distance between the super-speed signalterminals of the pair. The shielding-grounding plate is mounted in arear end of the insulative housing. The widening tabs of each pair ofthe super-speed signal terminals effectively diminish impedance of thesuper-speed signal terminal such that input loss and return loss of thesuper-speed signal terminals are reduced.

Other objectives, advantages and novel features of the invention willbecome more apparent from the following detailed description when takenin conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an interference-proof electrical plugconnector in accordance with the present invention;

FIG. 2 is a partially exploded perspective view of the interfere-proofelectrical plug connector in FIG. 1;

FIG. 3 is an exploded perspective view of the interfere-proof electricalplug connector in FIG. 1 omitting an upper shielding cover and a lowershielding cover;

FIG. 4 is another exploded perspective view of the interfere-proofelectrical plug connector in FIG. 1 omitting the upper shielding coverand the lower shielding cover;

FIG. 5 is an enlarged cross sectional side view of the interfere-proofelectrical plug connector in FIG. 1;

FIG. 6 is a perspective view of two terminal sets of the interfere-proofelectrical plug connector in FIG. 3;

FIG. 7 is a top view of one of the terminal sets of the interfere-proofelectrical plug connector in FIG. 6;

FIG. 8 is a bottom view of the other of the terminal sets of theinterfere-proof electrical plug connector in FIG. 6; and

FIG. 9 is a front view of the terminal sets of the interfere-proofelectrical plug connector in FIG. 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

With reference to FIGS. 1 and 2, an electrical plug connector inaccordance with the present invention may be a USB Type-C connector, andcomplies with the USB Type-C Cable and Connector Specification ver.0.98C set by the USB implementers Forum (USB IF).

With further reference to FIGS. 3 and 4, the electrical plug connectorcomprises an insulative housing 10, two terminal sets, ashielding-grounding plate 30, an upper rear plug bracket 40, a lowerrear plug bracket 50, a shell 60, an upper shielding cover 70 and alower shielding cover 80.

The insulative housing 10 is substantially horizontally symmetrical andhas a top board 101, a bottom board 102, two opposite sidewalls 103, aninsertion space 100, an assembling slot 17, an upper pressing element 15and a lower pressing element 16.

The top board 101 has multiple upper terminal recesses 1010 and multipleupper through holes 105. The upper terminal recesses 1010 are defined inan upper inner surface of the top board 101. The upper through holes 105are defined through the top board 101 and communicate with the insertionspace 100.

The bottom board 102 has multiple lower terminal recesses 1020 andmultiple lower through holes 106. The lower terminal recesses 1020 aredefined in a lower inner surface of the bottom board 102. The lowerthrough holes 106 are defined through the bottom board 102 andcommunicate with the insertion space 100.

The sidewalls 103 are located between the top board 101 and the bottomboard 102.

The insertion space 100 is defined in a front end of the insulativehousing 10 among the top board 101, the bottom board 102 and thesidewalls 103.

The assembling slot 17 is defined in a rear end of the insulativehousing 10.

The upper pressing element 15 is mounted on the top board 101 and hasmultiple upper resilient pressing tabs 151 formed on the upper pressingelement 15 and respectively extending through the upper through holes105 into the insertion space 100.

The lower pressing element 16 is mounted on the bottom board 102 and hasmultiple lower resilient pressing tabs 161 formed on the lower pressingelement 16 and respectively extending through the lower through holes106 into the insertion space 100.

With further reference to FIGS. 6 to 9, the terminal sets aresubstantially point symmetrical to each other according to a centre ofsymmetry of the insertion space 100. According to point symmetricalconfiguration of the terminal sets, when the terminal sets are rotatedfor 180 degrees according to the centre of symmetry, the rotatedterminal sets coincide with and are the same as the terminal setswithout rotation of 180 degrees. By the point symmetrical configurationof the terminal sets, the electrical plug connector is able to extendreversely into a corresponding receptacle connector to normallyimplement high speed signal transmission. The terminal sets are mountedrespectively on the upper inner surface of the top board 101 and thelower inner surface of the bottom board 102.

Each terminal set has multiple conductive terminals 20 and two pairs ofsuper-speed signal terminals 20 a, 20 b. The conductive terminals 20 andthe super-speed signal terminals 20 a, 20 b of one terminal set aremounted respectively in the upper terminal recesses 1010 of the topboard 101 of the insulative housing 10, and the conductive terminals 20and the super-speed signal terminals 20 a, 20 b of the other terminalset are mounted respectively in the lower terminal recesses 1020 of thebottom board 102 of the insulative housing 10. Furthermore, two centralconductive terminals are removed from one of the terminal sets, as shownin FIGS. 6 to 8. In other words, one terminal set has twelve conductiveterminals and the other terminal set only has ten conductive terminals.One of the terminal sets has less conductive terminals than the otherterminal set.

Each conductive terminal 20 has a mounting section 21, an electricalcontacting section 22 and a soldering section 23. The mounting section21 is mounted on the top board 101 or the bottom board 102 of theinsulative housing 10. The electrical contacting section 22 is formed onand protrudes forward from the mounting section 21 and extends in theinsertion space 100. The soldering section 23 is formed on and protrudesbackward from the mounting section 21. The electrical contactingsections 22 of one terminal set are arranged in an upper row, and theelectrical contacting sections 22 of the other terminal set are arrangedin a lower row aligned with the upper row. The soldering section 23 ofone terminal set are arranged in an upper row, and the soldering section23 of the other terminal set are arranged in a lower row aligned withthe upper row.

The super-speed signal terminals 20 a, 20 b of each pair are locatedadjacent to each other. Each super-speed signal terminal 20 a, 20 b hasa mounting section 21, an electrical contacting section 22 and asoldering section 23. The mounting section 21 is mounted on the topboard 101 or the bottom board 102 of the insulative housing 10. Theelectrical contacting section 22 is formed on and protrudes forward fromthe mounting section 21 and extends in the insertion space 100. Thesoldering section 23 is formed on and protrudes backward from themounting section 21. Furthermore, the mounting section 21 of eachsuper-speed signal terminal 20 a, 20 b further has a widening tab 211 a,211 b formed on and protruding from the mounting section 21 of thesuper-speed signal terminal 20 a, 20 b. The widening tabs 211 a, 211 bof the super-speed signal terminals 20 a, 20 b of each pair extendtoward each other such that a distance between the mounting sections 21of the super-speed signal terminals 20 a, 20 b is less than that betweenthe mounting sections 21 of adjacent conductive terminals 20 or thatbetween the mounting sections 21 of adjacent super-speed signal terminal20 a, 20 b and conductive terminal 20. The widening tabs 211 a, 211 b ofthe super-speed signal terminals 20 a, 20 b of each pair extendingtoward each other effectively diminish impedance of the super-speedsignal terminals 20 a, 20 b such that input loss and return loss of thesuper-speed signal terminals 20 a, 20 b are reduced.

Furthermore, a number of the conductive terminals 20 of one terminal setmay be two less than a number of the conductive terminal 20 of the otherterminal set to lower cost of material.

The shielding-grounding plate 30 is mounted in the rear end of theinsulative housing 10, may be mounted in the assembling slot 17 ofinsulative housing 10 and has a shielding body 31, an extensionshielding sheet 32 and two resilient hooking arms 35.

The shielding body 31 is mounted in the rear end of the insulativehousing 10, is located between the terminal sets, may be located betweenthe mounting sections 21 of the conductive terminals 20 of the twoterminal sets and has multiple mounting holes 311 defined through theshielding body 31.

The extension shielding sheet 32 is formed on and protrudes forward fromthe shielding body 31, is mounted in the rear end of the insulativehousing 10, may be mounted in the assembling slot 17 of the insulativehousing 10 and is located between the mounting sections of theconductive terminals 20 of the two terminal sets.

The resilient hooking arms 35 are formed on and protrude forwardrespectively from two opposite sides of the shielding body 31 and extendin the insertion space 100 of the insulative housing 10 for firmlyclamping and holding a corresponding electrical receptacle connectorengaged with the electrical plug connector such that an advertentdisengagement of the electrical plug connector from the electricalreceptacle connector is prevented.

With further reference to FIG. 9, the upper rear plug bracket 40 ismounted to the rear end of the insulative housing 10, is mounted abovethe shielding-grounding plate 30 and has an upper mounting bracket 41,an upper inserting board 42 and multiple upper mounting protrusions 411.

The upper inserting board 42 is formed on and protrudes forward from theupper mounting bracket 41 and is mounted in the assembling slot 17 ofthe insulative housing 10.

The upper mounting protrusions 411 are formed on and protrude downwardfrom the upper mounting bracket 41 and are mounted respectively throughthe mounting holes 311 of the shielding body 31 of theshielding-grounding plate 30.

The lower rear plug bracket 50 is mounted to the rear end of theinsulative housing 10, is mounted under the shielding-grounding plate 30and has a lower mounting bracket 51, a lower inserting board 52 andmultiple lower mounting slot 511.

The lower inserting board 52 is formed on and protrudes forward from thelower mounting bracket 51 and is mounted in the assembling slot 17 ofthe insulative housing 10.

The lower mounting slots 511 are defined in the lower mounting bracket51 and respectively receive the upper mounting protrusions 411.

The shell 60 is made of metal, is substantially horizontally symmetricaland has a cavity 600 defined in the shell 60 and accommodating theinsulative housing 10.

The upper shielding cover 70 and the lower shielding cover 80 cooperateto cover the insulative housing 10, the terminal sets, the upper rearplug bracket 40 and the lower rear plug bracket 50.

The interference-proof electrical plug connector has the followingadvantages.

1. The widening tabs 211 a, 211 b partially widen the super-speed signalterminals 20 a, 20 b of each pair to effectively diminish impedance ofthe super-speed signal terminals 20 a, 20 b such that input loss andreturn loss of the super-speed signal terminals 20 a, 20 b are reduced.

2. The resilient hooking arms 35 formed integrally on theshielding-grounding plate 30 provide excellent hooking force toeffectively prevent the electrical plug connector from inadvertentlydisengaging from the corresponding electrical receptacle connector.

3. The upper rear plug bracket 40 and the lower rear plug bracket 50 aremounted simultaneously on the insulative housing 10 and theshielding-grounding plate 30, which improves the structural strength ofthe electrical plug connector.

4. The upper shielding cover 70 and the lower shielding cover 80 furthershield the terminals set from being interfered with external noise.

Even though numerous characteristics and advantages of the presentinvention have been set forth in the foregoing description, togetherwith details of the structure and function of the invention, thedisclosure is illustrative only. Changes may be made in the details,especially in matters of shape, size, and arrangement of parts withinthe principles of the invention to the full extent indicated by thebroad general meaning of the terms in which the appended claims areexpressed.

What is claimed is:
 1. An interference-proof electrical plug connectorcomprising: an insulative housing having a top board, a bottom board,two opposite sidewalls and an insertion space defined in a front end ofthe insulative housing among the top board, the bottom board and thesidewalls; two terminal sets being substantially point symmetrical toeach other according to a centre of symmetry of the insertion space, andmounted respectively on an upper inner surface of the top board and alower inner surface of the bottom board, wherein each terminal set hasmultiple conductive terminals, each conductive terminal having amounting section mounted on the top board or the bottom board of theinsulative housing; an electrical contacting section formed on andprotruding forward from the mounting section and extending in theinsertion space; and a soldering section formed on and protrudingbackward from the mounting section; and at least one pair of super-speedsignal terminals, the super-speed signal terminals of each pair locatedadjacent to each other, and each super-speed signal terminal having amounting section mounted on the top board or the bottom board of theinsulative housing and having a widening tab formed on and protrudingfrom the mounting section, wherein the widening tabs of the super-speedsignal terminals of each pair extend toward each other such that adistance between the mounting sections of the super-speed signalterminals of each pair is less than that between the mounting sectionsof adjacent conductive terminals or that between the mounting sectionsof adjacent super-speed signal terminal and conductive terminal; anelectrical contacting section formed on and protruding forward from themounting section and extending in the insertion space; and a solderingsection formed on and protruding backward from the mounting section; ashielding-grounding plate mounted in a rear end of the insulativehousing and having a shielding body mounted in the rear end of theinsulative housing and located between the terminal sets; and tworesilient hooking arms formed on and protruding forward respectivelyfrom two opposite sides of the shielding body and extending in theinsertion space of the insulative housing; and a shell having a cavitydefined in the shell and accommodating the insulative housing; whereintwo central conductive terminals are removed from one of the terminalsets and the conductive terminals of one of the terminal sets are fewerthan the conductive terminals of the other terminal set.
 2. Theinterference-proof electrical plug connector as claimed in claim 1,wherein the top board has multiple upper through holes defined throughthe top board and communicating with the insertion space; the bottomboard has multiple lower through holes defined through the bottom boardand communicating with the insertion space; an upper pressing element ismounted on the top board and has multiple upper resilient pressing tabsformed on the upper pressing element and respectively extending throughthe upper through holes into the insertion space; and a lower pressingelement is mounted on the bottom board and has multiple lower resilientpressing tabs formed on the lower pressing element and respectivelyextending through the lower through holes into the insertion space. 3.The interference-proof electrical plug connector as claimed in claim 2,wherein the insulative housing has an assembling slot defined in therear end of the insulative housing; the shielding-grounding plate has anextension shielding sheet formed on and protruding forward from theshielding body, mounted in the assembling slot of the insulative housingand located between the mounting sections of the conductive terminals ofthe two terminal sets.
 4. The interference-proof electrical plugconnector as claimed in claim 3, wherein the shielding body of theshielding-grounding plate has multiple mounting holes defined throughthe shielding body; an upper rear plug bracket is mounted on the rearend of the insulative housing, is mounted above the shielding-groundingplate and has an upper mounting bracket; an upper inserting board formedon and protruding forward from the upper mounting bracket and mounted inthe assembling slot of the insulative housing; and multiple uppermounting protrusions formed on and protruding downward from the uppermounting bracket and mounted respectively through the mounting holes ofthe shielding body of the shielding-grounding plate a lower rear plugbracket is mounted on the rear end of the insulative housing, is mountedunder the shielding-grounding plate and has a lower mounting bracket; alower inserting board; a lower inserting board formed on and protrudingforward from the lower mounting bracket and mounted in the assemblingslot of the insulative housing; and multiple lower mounting slotsdefined in the lower mounting bracket and respectively receiving theupper mounting protrusions.
 5. The interference-proof electrical plugconnector as claimed in claim 4 further comprising an upper shieldingcover and a lower shielding cover cooperating to cover the insulativehousing, the terminal sets, the upper rear plug bracket, and the lowerrear plug bracket.
 6. The interference-proof electrical plug connectoras claimed in claim 5, wherein the top board has multiple upper terminalrecesses and multiple upper through holes defined in an upper innersurface of the top board; the bottom board has multiple lower terminalrecesses and multiple lower through holes defined in a lower innersurface of the bottom board; and the conductive terminals and thesuper-speed signal terminals of one terminal set are mountedrespectively in the upper terminal recesses of the top board of theinsulative housing, and the conductive terminals and the super-speedsignal terminals of the other terminal set are mounted respectively inthe lower terminal recesses of the bottom board of the insulativehousing.